xycaerys/Omnisign ? reverse-engineered prompt

Build me a full sign language translator app called OmniSign.

I want a web app where someone can use their webcam to sign and see the app turn those gestures into plain English text in real time. I also want the reverse, where I can type a sentence and the app shows the meaning as a 3D avatar signing it back. Make it feel polished and easy to use, with a clean interface, a live camera view, a text output area, and a simple avatar viewer that animates the signs smoothly.

Please wire up the frontend and backend so they talk to each other properly, and make sure the app can handle the basic sign to text and text to sign flow end to end. Use the provided 3D avatar asset and keep the animation system simple but working. If you need to check current docs for the libraries, feel free to look them up online. Also include clear setup steps so I can run it locally without guessing.